package day12.task;

import java.util.Scanner;

public class TaskThree {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int i = sc.nextInt();
        try {
            if (i==1){
                System.out.println("数学课");
            }else if(i==2){
                System.out.println("语文课");
            }else if(i==3){
                System.out.println("地理课");
            }else{ throw new IndexOutOfBoundsException("输入序号错误");}
        } catch (IndexOutOfBoundsException s) {
//            s.printStackTrace();
            System.out.println(s.getMessage());
        } finally {
            System.out.println("欢迎提出建议");
        }
    }
}
